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charset="UTF-8" ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1657012373; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=rNfgCc3yCLXG4f0YNRR9AvD14vQhINiZLzedPaTIf9I=; b=UQcrNCS/EVme7Fl/Z65UKw0r5GdhEit2vo4MFKgthVsI9mhWSCTnRi7/I96GTnmc5nOndW /Xpyh3LOEyYujGrAQoBQWll0Bdvxn9YB7CHAJnqge3bqRsdKo9qbRsp0aGQ2Mg9c3ANnpe zojRSeJrSPWIWZWCG5ysMEdgIyd3Kv8= ARC-Authentication-Results: i=1; imf04.hostedemail.com; dkim=pass header.d=bytedance-com.20210112.gappssmtp.com header.s=20210112 header.b="fMFzd1R/"; dmarc=pass (policy=none) header.from=bytedance.com; spf=pass (imf04.hostedemail.com: domain of songmuchun@bytedance.com designates 209.85.128.180 as permitted sender) smtp.mailfrom=songmuchun@bytedance.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1657012373; a=rsa-sha256; cv=none; b=mVFV6MuuHsUbiXtFzQScdIEUZWGlWFwtIJizKL71ja2rajpeHP0UokyY/QCnDHBeRj6fdp vQ9xiPI4SedcTVQ5nMf6+oVyakgooygyiiI/moZlAz95IL8UjCbrud8+MJ72LNgI6s8o/0 S7dGDRFPl83Q369t0l9Wjsphr3Whpek= X-Rspam-User: X-Rspamd-Queue-Id: 20A6840005 Authentication-Results: imf04.hostedemail.com; dkim=pass header.d=bytedance-com.20210112.gappssmtp.com header.s=20210112 header.b="fMFzd1R/"; dmarc=pass (policy=none) header.from=bytedance.com; spf=pass (imf04.hostedemail.com: domain of songmuchun@bytedance.com designates 209.85.128.180 as permitted sender) smtp.mailfrom=songmuchun@bytedance.com X-Stat-Signature: eu3gmn157csjjn9bn98k8uhugqj9okn1 X-Rspamd-Server: rspam08 X-HE-Tag: 1657012371-666544 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Tue, Jul 5, 2022 at 4:46 PM Arnd Bergmann wrote: > > On Tue, Jul 5, 2022 at 10:38 AM Muchun Song wrote: > > On Tue, Jul 5, 2022 at 4:06 PM Arnd Bergmann wrote: > > > On Tue, Jul 5, 2022 at 9:51 AM Muchun Song wrote: > > > > How about including the static key header in the scope of > > CONFIG_HUGETLB_PAGE_OPTIMIZE_VMEMMAP? > > That helps a little, but it means we still pay for it on x86 and > arm64, which are the > most common architectures. Alright. Make sense. > > Arnd